Question

Modify the C++ program you created in assignment 1 by using 'user defined' functions. You are to create 3 functions:

1. A function to return the perimeter of a rectangle. This function shall be passed 2 parameters as doubles; the width and the length of the rectangle. Name this function and all parameters appropriately. This function shall return a value of type double, which is the perimeter.

2. A function to return the area of a rectangle. This function shall be passed 2 parameters as doubles; the width and the length of the rectangle. Name this function and all parameters appropriately. This function shall return a value of type double, which is the area.

3. A function to print the characteristics of a rectangle; the length of the sides, the perimeter, and the area.   This function shall be passed 4 parameters as doubles; the width, the length, the perimeter, and the area of the rectangle. Name this function and all parameters appropriately. This function shall return void. Remember to display these characteristics in a visually pleasant manner.

Create the same 3 rectangles you created for assignment 1, calling the new functions. Please note that you want perform the following 3 times in sequence:

Read in the width and length of the rectangle

call function to determine area

call function to determine perimeter

call function to print out the rectangles characteristics (width, length, area and perimeter)

I do not have the rectangles I used for my first assignment, I just used "cin >>" to allow the user to input different lengths and widths each time.

Answer 1

If you have any doubts, please give me comment...

#include<iostream>

using namespace std;

double perimeter(double width, double length){

return 2*(width+length);

}

double area(double width, double length){

return width*length;

}

void print(double width, double length, double area, double perimeter){

cout<<"Width: "<<width<<endl;

cout<<"Length: "<<length<<endl;

cout<<"Area: "<<area<<endl;

cout<<"Perimeter: "<<perimeter<<endl;

}

int main(){

double length, width, a, p;

for(int i=0; i<3; i++){

cout<<"Enter width and length: ";

cin>>width>>length;

a = area(width, length);

p = perimeter(width, length);

print(width, length, a, p);

cout<<endl;

}

return 0;

}